got grey blank screen when streaming Hyprland Headless display

[J4ckTh3R1pper]

Client is TigerVNC, I got grey blank screen when connected to wayvnc

Useful information:

Please, try to gather as much of useful information as possible and follow these instructions:

• Version:

  • wayvnc: 0.8.0
  • neatvnc: 0.8.0
  • aml: 0.3.0

• Try to reproduce while capturing a trace log:

  Info: Capturing output HEADLESS-2 
  Info: >> Headless output 2 1920x1080+0x0 Power:ON
  DEBUG: ../neatvnc-0.8.0/src/server.c: 1908: Trying address: 0.0.0.0
  DEBUG: ../neatvnc-0.8.0/src/server.c: 1928: Successfully bound to address
  Info: Listening for connections on 0.0.0.0:5900
  DEBUG: ../wayvnc-0.8.0/src/ctl-server.c: 808: Initializing wayvncctl socket: /run/user/1000/wayvncctl
  Info: New client connection from 192.168.5.14: 0x55f461c6d8c0 (ref 1)
  DEBUG: ../neatvnc-0.8.0/src/server.c: 799: Client chose security type: 1
  Info: Starting screen capture
  DEBUG: ../wayvnc-0.8.0/src/main.c: 1337: Client connected, new client count:1
  DEBUG: ../wayvnc-0.8.0/src/ctl-server.c: 940: Enqueueing client-connected event: {"id":"1","address":"192.168.5.14","username":null,"seat":"Hyprland","connection_count":1}                                                            DEBUG: ../wayvnc-0.8.0/src/ctl-server.c: 967: Enqueued client-connected event for 0 clients
  DEBUG: ../neatvnc-0.8.0/src/server.c: 1048: Client 0x55f461c6d8c0 set encodings: cursor,desktop-size,extended-desktop-size,qemu-extended-key-event,tight,copyrect,open-h264,zrle,hextile,rre,copyrect,raw
  DEBUG: ../wayvnc-0.8.0/src/main.c: 799: Client resolution changed: 1920x1008, capturing output HEADLESS-2 which is headless: yes
  zwlr_output_configuration_head_v1@24: error 3: Invalid mode
  ERROR: ../wayvnc-0.8.0/src/main.c: 503: Failed to dispatch pending
  DEBUG: ../wayvnc-0.8.0/src/ctl-server.c: 940: Enqueueing detached event: {} 
  DEBUG: ../wayvnc-0.8.0/src/ctl-server.c: 967: Enqueued detached event for 0 clients
  Info: Choosing tight encoding for client 0x55f461c6d8c0

• Describe how to reproduce the problem

  • Start headless hyprland session via SSH with command WLR_BACKENDS=headless WLR_LIBINPUT_NO_DEVICES=1 Hyprland
  • Start wayvnc via SSH with command wayvnc --log-level=debug 0.0.0.0
  • Connect to VNC server using TigerVNC

[any1]

Looks like hyprland raises a protocol error when wayvnc tries to resize the headless output. This should not be a protocol error and this is the problem.

[J4ckTh3R1pper]

i switched to TightVNC client and it works fine now, strange

[any1]

No, it isn't strange at all. TightVNC doesn't support client-side resizing, so it's not going to trigger this error.

[J4ckTh3R1pper]

No, it isn't strange at all. TightVNC doesn't support client-side resizing, so it's not going to trigger this error.

So what am I supposed to do to prevent TigerVNC from resizing the WM?

[any1]

No, it isn't strange at all. TightVNC doesn't support client-side resizing, so it's not going to trigger this error.

So what am I supposed to do to prevent TigerVNC from resizing the WM?

This is a hyprland bug, not a TigerVNC bug or a wayvnc bug.